#include <stdio.h>

int sum(int *arr, int size)
{
  int total = 0;
  for (int i = 0; i < size; i++)
  {
    total += arr[i];
  }
  return total;
}

int main()
{
  int numbers[] = {1, 2, 3, 4, 5};
  int size = sizeof(numbers) / sizeof(numbers[0]);
  int result = sum(numbers, size);
  printf("Sum: %d\n", result);
  return 0;
}